Most of a country's population is clustered in the middle of the country, running south to north. there is very low population density in the southeast and northeast corners of the country. in the western part of the country, there is a relatively low population density. which of the following could be inferred from the above information?

a. there is fertile land in the southeast.
b. there is a river running through the center of the country.
c. there is a desert in the northeast of the country.
d. most cities are in the west of the country.

options

a. i and ii
b. i and iii
c. i and iv
d. ii and iii
e. iii and iv

D. II AND III

Explanation:

I. There is fertile land in the southeast.

II. There is a river running through the center of the country.

III. There is a desert in the northeast of the country.

IV. Most cities are in the west of the country.

The first element of answer is provided in the question, saying the population is mostly clustered in the middle of the country.  The main reason why a population would gather in the center of a country is water... river or lake.  There's no mention of a lake, but answer II talks about a river.

So, since there's II in the answer, that leaves us with A and D... we have to determine which of I and III can also be deducted from the question statement.

The question says there's a VERY LOW population density in the SE and NE corners, meaning is probably desert, since it identifies the Western part of the country as "relatively low population density" (meaning most likely rural).

From the paragraph above, we can infer that NE part of the country is a desert.

Thus, the answers are II AND III, so choice D.